ASTROSAT CZTI

Data Quality Report

Orbit 22948

Creation date: 2024-06-27T18:47:53.729313
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A08_009T01_9000003390_22948cztM0_level2.evt modeM0/AS1A08_009T01_9000003390_22948cztM0_level2_quad_clean.evt
Size (bytes)599,725,44086,518,080
Size571.9 MB 82.5 MB
Events in quadrant A3,507,994558,837
Events in quadrant B3,330,052567,065
Events in quadrant C3,224,959540,612
Events in quadrant D7,626,328466,653

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150821
B0143541
C0141861
D0273651

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6977941.347284%
B6977961.375950%
C69781051.504729%
D6977169824.337108%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7377 6978 1 1 0.01% 0.01%
B 7377 6978 5 5 0.07% 0.07%
C 7378 6979 1 1 0.01% 0.01%
D 7377 6978 1366 1366 18.52% 19.58%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 14 238 289329 1725.29 823 804 167.2
A 13 170 43287 254.04 823 804 167.2
A 13 254 10741 59.42 823 804 167.2
B 0 189 53049 333.13 817 797 156.9
B 4 216 40274 251.68 817 797 156.9
B 0 190 32824 204.19 817 797 156.9
C 14 238 125453 676.54 783 784 184.3
C 8 208 22324 116.89 783 784 184.3
C 7 247 14627 75.12 783 784 184.3
D 7 238 3810758 21297.51 735 713 178.9
D 1 52 701690 3918.34 735 713 178.9
D 13 153 232911 1297.95 735 713 178.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter